Plunging a knife in again and again, diver Craig Clasen grapples with a 12ft tiger shark to protect a friend.
For two hours he wrestled with the giant, spearing it seven times, even drowning the beast before eventually finishing it off with a knife.
Mr

Thursday was supposed to have been a routine day of fishing for starfish for the two Parker brothers off Teahupoo, the world famous surfing site next to Tahiti's peninsula.
But catching starfish, no matter how meritorious the gesture, doesn't make headli